Moistening device for incubators.



mentari,k Jn. 29, 1918.

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IVI. D. AIRGOOD. v MQISTENING DEVICE FOR INCUBATORS. APPLICATION FILEDAUG.28| 19u16.

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III IIII A IIII IIIIII III|II was 'Anwar MURREL D. AIRGOOID, OFPUNXSUTAWNEY, Il?ENNSYLVANIA.'

MISTENING DEVICE FOR INCUBATORS.

To all whom t may concern.'

Be it known that I, MURREL D. AIRGOOD, a citizenot1 the United States,residing at lunxsutawney, in the county of Jeli'erson and State ofPennsylvania, have invented new and useful improvements in MoisteningDevices for Incubators, of which the following is a specilication.

This invention relates to incubators, and it has particular reference toa device for supplying the requisite moisture to an incubator' toproducethe best results and for regulating or governing such supply. Theinvention has for its object to produce a simple and improved attachmentwhich may l be readily applied to and used in connection with aconventional type of incubatoi-f0r the purpose of supplying moisture tothe air utilized for heating the interior of the incubator.

A further object of the invention'is to produce a moisteningdevice whichmay be readily applied to the heating apparatus of the conventionalincubator. Y

Vith these and other ends in view which will readily appear as thenature of the invention is better' understood, the same consists in theimproved construction and novel arrangement and combination of partswhich will be hereinafter fully described and particularly pointed outin the claims.

In the accompanying` drawing has been illustrated a simple and preferredform of the invention, it being, however, understood that no limitationis necessarily made to the precise structural details therein exhibited,but that changes, alterations and modifications within the scope of theclaims may be resorted to when desired.

In the drawing,-

Figure 1 is a' side elevation of an incubator `equipped with theimproved moistening appliance, a part of the heating apparatus beingshown in section.

Fig. 2 is an enlarged sectional detail View of a portion of the heatingapparatus and, the moistcning device.

Fig. 3 is a sectional detail view taken on the line 3-3 in Fig. 1.

Fig. t is a detail view partly in elevation and partly in sectionillustrating a modified form of the invention.

Fig. 5 is a sectional detail view taken on the line 5-5 in Fig. 1.

Corresponding parts in the several figures are denoted by likecharacters of reference.V

Specification of Letters Patent.

Patented aan. as, isis.'

Appli-cation filed August 28, 1916. Serial No. 117,330.V

The incubator casing A supports the heaty ing apparatus which comprisesa lamp or heater 15 and a flue casing C, the latter b eing composed ofthree substantially concentric cylinders namely an outer cylinder 16, anintermediate cylinder 17 and an inner cylinder 18. The inner cylinder,which constitutes the lamp chimney, is connected with the intermediatecylinder 17 by a tubularl passage 19 through which the products ofcombustion may pass from the lamp chimney to the space 20'between theouter and intermediate cylinders. Said space is closed at the lower endthereof by an annular flange 21 and the outer cylinder is providednearits lower endwith an exit 22 for the products of combustion. Theinner cylinder 18 is closed at its upper end by a top member 23 Aand theoutermost cylinder is likewise, closed by a top member 24. The.

cubator by means of a pipe or duct 27that extends through the wall ofthe outermost cylinder.

The wall or" the innermost'cylinder 18 of the flue casing is aperturedfor the passage of a supporting member 18 carrying at one end a metallicball or body 19 which is located within the chimney flue directly abovethe flame of the heater. rllhe supporting member 18 alsocarries a pan orreceptacle l20 containing sand or other like refractory material whichis adapted to absorb water, such material being indicated at 21.

A tank 22 which is supported on the incubator casing is provided with anoutlet pipe 23 equipped with a needle valve 24 and having an outletnozzle 25" which terminates directly over the receptacle 20.

'In the operation of the device the tank 22 is filled with water whichis permitted to pass through the pipe or duct 23 to theV 18', beingcomposed of heat conductive material, connects with the trough orreceptacle 2O` which is filled with absorbent refractory material, saidmaterial being heated by heat transmitted from the ball or body 19through the member 18, thus vaporizing the water which is discharged tothe refractory material, the vapor serving to moisten the air passingthrough the vHue casing tothe incubator. rllhe air enters the space`between the lower ends of the intermediate and inner cylinders 1T, 18in the space, the space between said cylinders being` kept in a heatedcondition by the products of combustion passing upwardly through thecylinder 1S which constitutes the lamp chimney and through the space 20between the intermediate and outer cylinders. The air being thus heatedand supplied with moisture, passes to the incubator through the duct 2T.Should the heat in the incubator rise above a predetermined degree, thevalve 26 will be moved to the non-obstructing position shown in Fig. 1,and the heated moist air will then pass to the atmosphere until, by thelowering of the heat within the incubator, the valve is again moved toan obstructing position. The humidity in the incubator may beascertained by the use oi a hygrometer of ordinary construction, and bymanipulating the needle valve the supply ot water may be regulatedaccording to the requirements.

ln the modiied form of the device shown in Fig. 4 the receptacle, Aheredesignated by 20 ot absorbent refractory material is in the 'forni ot' atube extending through the top closure of the chimney flue 1S, ther her'ting ball or body 19 being supported at the lower end o't said tubedirectly in the path ot' the flame ot' the heater.

.From the foregoing description, taken in connection with the drawinghereto annexed, it will be seen that l have produced a very simple andinexpensivel device which is readily applicable to the heating apparatusot' incubators et ordinary or conventhe combination with a heater and aflue` casing having an air inlet and an exit communicating with theinterior of the incubator, of a receptacle supported within the fluecasing and containing absorbent retractory material, and means forsupplying water to said receptacle.

i2. In a moistening device for incubators, the combination with a heaterand a [lue casing having an air inlet an air exit communicating with theinterior of the `incu-` bator and a smoke exit, oit' a receptaclesupported within the flue casing and coi'itaining absorbent refractorymaterial, and means .tor supplyingwater to said receptacle, said meansincluding a supply tank, a duct haying a terminal nozzle, and aregulating valve. y

In a device of the class described, ay heater, a liuc casing, asupporting member et heat conductive material extending through a wallof the flue casing, a receptacle supported at one end of the supportingmember containing absorbent refractory material, a heat conductive bodycarried atr the other end of the supporting member and positioned in thepath `of the flame of the heater, and means for supplying water to th-ereceptacle.

In testimony whereof I aiiix my signature.

MURREL D. AIRGOOD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents;

Washington, D. C.

